Returns
| Series | 1 week | 1 month | 3 months | 6 months | YTD | 1 year | 3 years (ann.) | 5 years (ann.) | 10 years (ann.) | Since inception (ann.) |
|---|---|---|---|---|---|---|---|---|---|---|
| Market-price return | -3.97% | -3.04% | +2.22% | +19.25% | +20.42% | +16.71% | +15.45% | -1.64% | +10.22% | +7.75% |
| Market-price total return | -3.97% | +2.19% | +8.84% | +29.12% | +32.89% | +35.09% | +27.76% | +8.83% | +19.72% | +16.77% |
| NAV return | -3.09% | +1.09% | +0.41% | +18.14% | +22.13% | +18.93% | +17.54% | -1.47% | +9.71% | +8.60% |
| NAV total return | -3.09% | +6.41% | +6.71% | +27.50% | +34.21% | +36.74% | +29.55% | +8.70% | +19.04% | +17.46% |
Performance through Oct 14, 2026. Price and NAV returns are simple changes; total returns reinvest each distribution at the series value on its ex-date (first observation on/after). Periods of one year or less are cumulative; longer periods are annualised. Series are built from unadjusted prices plus the distribution record so no distribution is counted twice. Corporate actions: the vendor price series is split-adjusted; rights offerings and mergers are not restated — check Corporate Actions.
Growth of $10,000, five years
Risk statistics
| Statistic | Market price | NAV | Specification |
|---|---|---|---|
| Volatility, 1 year | 0.23% | 0.26% | annualised SD of daily total returns, √252 |
| Volatility, 3 years | 0.21% | 0.22% | as above |
| Volatility, 5 years | 0.24% | 0.22% | as above |
| Maximum drawdown, 3 years | -23.38% | -23.33% | peak-to-trough on the total-return index |
| Sharpe ratio, 3 years | 1.04 | 1.14 | excess over FRED DGS3MO (window average) (avg 4.52%), annualised |
| Sortino ratio, 3 years | 1.50 | 1.66 | downside deviation of excess returns |
| Beta vs. benchmark proxy, 3 years | 1.09 | — | SPY (U.S. equity ETF proxy), daily, aligned dates |
| Correlation, 3 years | 0.78 | — | as above |
| Observations (3y) | 751 | — | minimum 60; rankings require 500 |
Market-price and NAV volatility are different quantities and are never mixed. NAV volatility for funds holding stale-marked or illiquid assets can understate economic risk.
CEF Explorer research page for BlackRock Science & Technology Trust. Figures carry their own dates and sources; a discount to NAV does not guarantee convergence or any return. This is not investment advice.